Stone-breaker.



PATENTED JUNE 23, 19013. E. DEANE. STONE BREAKER.

APPLIOATIOH'IILED 0013.15, 1902.

N0 MODEL.

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H m fig? 2,

l v 71 M J a E i z' 2 figrf g WITNESSES: INVENTOR- Edwin flea-m? BYW A TTOHNE Y8.

ma NORRIS Pzwzns. co. woruu'rm v WASNINGTON, u. c

, j to the movable jaw.

UNITED STATES Patented June 23, 1903.

PATENT @FFICE.

EDWIN DEANE, OF NEW YORK, N. Y.,,ASSIGNOR or ONE-HALF TO JAMES cox, OF NEWYQRK, N. Y.

STONE-BREAKER.

SPECIFICATION forming part of Letters Patent N 0. 731,866, dated June 23, 1903. Application filedOctober 15, 1902. Serial No. 127,357. (No model.)

To atZZ whom it may concern:

Be it known thatI, EDWIN DEANE, a sub ject of the King of Great Britain, residing in the city of New York, borough of Manhattan,

in the county and State of New Yorkfhave invented a new and Improved Stone-Breaker, of which the following is a full, clear, and exact description.

This invention relates to a stone-breaker of that class in which are provided a stationary jaw, a movable jaw swinging toward and from the stationary jaw, and a suitable mechanism for imparting the My invention resides in certain improvements in the construction of a crusher of this sort. These improvements reside especially in the means for imparting movement to the movable jaw; and they consist in a peculiarly-constructed crank-shaft carrying a pitman which hangs from the crank-shaft and is of essentially, rectangular form, the lower portion being in the form of a horizontal bar which coacts with a. peculiarly-constructed toggle, so that as the pitmauis raised and lowered the toggle is actuated to impart the necessary movement to the movable jaw.

The invention also resides in a peculiarlyarranged bearing-block for the shaft on which the movable jaw is mounted, this bearing block or box enabling the said shaft to be adjusted toward and from the stationary jaw at will, thus to regulate the degree to which the stone is to be crushed. This specification is an exact description of one example of myinvention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure l is a vertical section of the machine. Fig. 2 is a plan view showing the combined drive and balance wheels in section.

Fig. 3 is a rearelevation of the pitman and.

toggle, showing the frame in section; and

Fig. 4 is a section on the line 4 i of Fig. 1.

a. indicates the framing of the crusher,

which may be of the usual or any desired form.

1) indicates the stationary jaw, and c indinecessary movement cates the movable jaw, which are adapted to coact in the usual manner.

cl indicates the shaft on which the movable jaw c is hung, this shaft extending horizontally across the upper part of the frame and being mounted in boxes 61. The boxes 01 are arranged to slide longitudinally of the machine in guideways a, formed at each side of the frame thereof. Back of the boxes are placed a number of spacers d and working against the front sides of the boxes are adj listing screws d which press the boxes tightly against the spacers. It is clear that by adding to or subtracting from the number of spacers and by properly adjusting the screws (1 the position of the jaw c with respect to the jaw b may be regulated at will, and at the same time a thoroughly solid and effective means for mounting the jaw c is provided.

Formed on the frame rearward of the guides at and at each side thereof are the boxes a for the drive-shaft 2. This shaft extends transversely across the frame and may be provided at one end with a balance-wheel f. At the other end the shaft is provided with a balance-wheel g, formed-of cast metal and covered with a forged plate or hoop g, formed of steel or iron. This band or hoopgenablesa driving-belt to beapplied directly to the balance-wheel g, and, further, itvmaterially strengthens the wheel, so that the crusher may be driven at a high speedjwithout danger of breaking the balance-wheel.

Asshown best in Fig.4, theshaft e is provided at the inner portion of each box a with a frusto-conical part or enlargement e, these parts 8 being concentric to the axis of the shaft, and therefore fitting concentrically in correspondingly-formed portions ofthe boxes a A wrist-pin eiconnects the coned ends 6 and is internally tangent to the periphery of the bases of said ends. As here shown, the wrist-pin is of the same diameter astlie shaft.

These parts e and e therefore form, essentially, a double crank of small throw. This peculiar construction provides for great strength, and by employing a crank of this character instead of an eccentric-like element the surface friction of the engaging parts is reduced materially.

7 The pitman comprisesa box h, in which is fitted a brass h, secured properly against the cranked portion e of the shaft 6 by means of Wedges 71. passing transversely of the shaft under the brass. These wedges h are in turn secured in place by keys h which are driven in between the walls of the box it and the wedges W, as indicated by the dotted lines in Fig. 1. By means of these keys the wedges or cotters h are fastened securely to the abutment, but nevertheless exert their proper infiuence on the brass h. The said brasses h may be of the usual or any preferred form and are here shown as placed in the lower portions of the boxes, so as to bear on the under side of the cranked portion e of the driveshaft 6. The pitman further comprises downwardly-extending parallel side portions M, which lie inside of the frame a and are connected at their lower ends by a cross-bar if, these parts it, h, and 7& giving the pitman the rectangular form above referred to. The two memberst and 2" of the toggle are engaged, respectively, with abutmentblocks a? at'the rear of the frame a and with the rear side of the moving jaw 0. These toggle members are in the form of horizontally-disposed plates dipping downward toward each other, so that the toggle is set by an upward movement of the meeting ends of the togglesections. The toggle-section i has a transverselyedisposed cavity 11 therein, which is adapted to receive the upper edge of the bar 71, and said member 2' also has a transverselydisposed cavity 2' in its inner end, this cavity forming a seat to receive the rolling inner end of the toggle-section 11. It will thus be observed'that the two members of the toggle are jointed directly without the aid of an intervening part, and by this construction, in connection with the arrangement of the pitman-bar k below the toggle-joint, the power and durability of the machine are very greatly increased.

The operation of the apparatus will be fully understood by persons skilled in-the art, and it needs no special description here. The stone is fed to the jaws in the usual manner and the shaft 6 rotated. The action of the pitman on the toggle causes the moving jaw to be operated toward and from the fixed jaw, and in connection with the toggle action it will be observed that the pitman does not on its upward movement actually set the togglethat is to say, it does not move the toggle members t' z" into'actual alinement or plane with each other, but into a position closely approaching this set or alined position.

Therefore as the pitman returns or moves downward the weight of the parts 0, 'i, and 11 causes the toggle to drop and follow the "spirit and scope thereof. Hence I consider myself entitled to all such variations as may lie within the intent of my claims.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent- 1. A crank-shaft, comprising a main part, a frusto-conical part disposed concentrically on-the main part and joined thereto at its small end, and a wrist-pin joined to thebase of the frusto-conical part, said wrist-pin lying eccentrically to the main and frusto-conical parts. v i

2. A double-crank shaft, comprisingmain end parts, frusto-conical parts carried respectively thereby and disposed concentrically thereto, the small end of the frusto-conical parts joining the main parts of the shaft, and a wrist-pin extending between the bases of the frusto-conical parts and disposed eccentrically thereto.

3. In astone-crusher, the combination with the frame, of a fixed jaw, a movable jaw,

means for operating the movable jaw, and a I driveshaft for actuating said means, the drive-shaft comprising main end parts, circular enlargements carried respectively thereby and disposed concentrically thereto, said end parts and enlargements having bearing in the frame, and a wrist-pin extending between the adjacent faces of the enlargements and disposed eccentrically thereto and to the said main end parts of the shaft.

4. A stone-crusher, comprising the combination with the frame and stationary jaw, of

a movable jaw, toggle members respectively 

